OBS & PCM WAV Stereo Audio

dzn

New Member
Hi folks,

Background: I am not the most tech savvy person. For the last few years I have been making music with hardware synthesizers. The technology here has progressed to a point where some devices can even output audio over USB quite effectively. I had never recorded audio or video on a computer - all of my work has been purely for my own consumption. More recently, I had been given strong incentive to change that, and I have been looking into ways to record some of my performances. In the music world, many people directed me to use a DAW. While I see benefits, I am more interested in simultaneously recording audio and video, and being able to also take the audio out in standalone situations.

So I tried OBS, and on my own I actually found it quite easy to set-up for recording. The issue is, I am completely lost in formats. Naturally I would like video and audio to be in the highest quality my computer is capable of recording on, but I was given criteria for the audio that I am apparently not meeting. Specifically, I need to be recording in PCM .WAV Stereo 24bit format. From what I can see, OBS doesn't have a way to export .WAV files directly, but is it possible to record a video in .MOV or .MP4 format, and then extract the .WAV audio in that format above? I don't even understand the options in OBS for things like audio bit rate.

Is there a way to do this in OBS, or am I better off recording video and audio separately? If that is the case, I guess I would also need to learn how to synchronize the two.

Thank you to anyone who read this and has an answer. I deeply appreciate the time.
 

rockbottom

Active Member
I record with OBS & Audacity. With OBS I record NVENC H265 or H264 with 24/48 PCM audio. With Audacity I'm recording 32/48 Floating Point Audio. I use the 32/48 Floating Point recording as back-up in case there is any clipping in the 24/48 Fixed Point Audio.

I sync audio in post using Vegas Pro & assemble (Remux) my final files with mkvmerge or Avidemux. I only re-render video when absolutely necessary.

OBS > Advanced > Custom Output (FFMPEG)

1667824116945.png
 

dzn

New Member
I record with OBS & Audacity. With OBS I record NVENC H265 or H264 with 24/48 PCM audio. With Audacity I'm recording 32/48 Floating Point Audio. I use the 32/48 Floating Point recording as back-up in case there is any clipping in the 24/48 Fixed Point Audio.

I sync audio in post using Vegas Pro & assemble (Remux) my final files with mkvmerge or Avidemux. I only re-render video when absolutely necessary.

OBS > Advanced > Custom Output (FFMPEG)

View attachment 88482
Thank you for the reference; I am comparing with my settings on Mac. It looks like things might be worded a little differently. If I want to record as a .MP4 or .MOV instead of .MKV like your screenshot, would I still be able to use a .WAV file converter to retain the settings of the audio encoder? I am assuming that PCM_s24le is what I am looking for. Is there a reason behind that specific audio bitrate? Is that essentially the max of what your computer can handle?
 

rockbottom

Active Member
No mp4 container, use quicktime (.mov) or Matroska (mkv). FYI, Quicktime may give you trouble when recording @ 30FPS so Matroska is the way to go when not recording 60FPS.


With MAC you may need to use PCM_s24be

24/48 PCM is 2304kbps but you don't need to fill in the box.
 

rockbottom

Active Member
Sync I did yesterday, replaced all of my recorded audio with the concert soundboard recording...

Post:
Sync 16/44 Soundboard w/Vegas Pro 17 64-bit Build 452 > FLAC16/44
Final Assembly w/mkvmerge 64-bit v71.1.0
 
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